<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#abs {
 position: absolute;
 left: 20px; top: 20px;
 width: 100px; height: 100px;
 background-color: green;
}
</style>
</head>
<body>
<div id="abs"></div>
</body>
</html>
